Williams, who missed Monday’s game with a sore left side, was forced out of Wednesday’s game against the Celtics after just 4:07. He didn’t play at all in the second half, and his status for Friday
against the 76ers is up in the air.

“He had the same injury,’’ Nets coach Lionel Hollins said.

A team spokesman added the team would have a further update on Thursday. Williams was not made available after the game.

Williams strained his calf in an abbreviated 10-minute stint at Cleveland on Dec. 19 and missed the next two games. After returning to action, he came off the bench in six straight games before developing soreness in his left side.

Despite being listed as probable on Monday afternoon, he sat out that night’s loss to Dallas. On Wednesday, Williams officially was listed as doubtful, but eventually decided to play. Perhaps it would have been better if he hadn’t.

He logged just 1:24 in the first quarter, and then, after starting the second quarter, his left side started to act up again. After committing a turnover, Williams left the game with 10:21 remaining in the half. He got looked at by trainer Tim Walsh, and headed to the locker room.

He never returned, leaving Jarrett Jack to log 39:20 after playing 44 minutes in Monday’s overtime loss.

“With Deron getting hurt, playing one game then being hurt, that’s put a lot of pressure on Jarrett,’’ said Hollins, who might be without Williams for awhile.

The veteran guard had appeared to be settling into his role as a reserve. In his first four games after the calf injury, he shot a wretched 7-of-27 from the floor. But he bounced back to average 14.5 points, 7.5 assists, just one turnover and 50 percent shooting in consecutive games at Miami and Orlando, only the fifth NBA player this season to hand out seven assists in back-to-back games off the bench.